Cisco 1605R Przewodnik Instalacji Strona 69

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Connecting WAN and Voice Interface Cards to a Network 3-21
T1/FT1 WAN Interface Card LEDs
Figure 3-20 Connecting the T1/FT1 Card to the T1 Wall Jack
Step 4
Turn ON power to the router.
Step 5 Check that theCD LED goes on, which means that the card’s internal DSU/CSU
is communicating with the DSU/CSU at the T1 service provider’s central office.
T1/FT1 WAN Interface Card LEDs
The T1/FT1 card has three LEDs and a loopback button, which are shown in Figure 3-21
and described in Table 3-5.
SEE MANUAL
BEFORE
INSTALLATION
LP AL CD
LOOP
BACK
DSU
CSU
T1
T1 DSU/CSU
T1 port
(RJ-45)
Straight-through
RJ-45-to-RJ-45 cable
T1 (RJ-48C)
wall jack
H11203
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